Six-Lens Optical System Aspheric Surfaces View Angle
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Solution Overview
Problem
Traditional optical image capturing systems for portable electronic devices fail to meet the requirements of higher pixel density and wider angles, leading to limitations in image quality and view angle, particularly for applications like self-shooting functions.
Innovation Solution
The optical image capturing system employs a combination of six-piece optical lenses with specific refractive powers, aspheric surfaces, and inflection points to increase the view angle and improve imaging quality, utilizing a configuration of refractive powers and surface geometries to optimize lens parameters such as focal lengths, entrance pupil diameters, and aberration correction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional optical image capturing systems are used, then the device structure is simple, but the view angle and image quality cannot meet high pixel density requirements
Solution Approach 1:
The optical system is divided into six separate lens elements (first lens element, second lens element, third lens element, fourth lens element, fifth lens element, and sixth lens element), each with specific refractive powers and surface characteristics. This segmentation allows each lens to be optimized for specific functions while collectively achieving high image quality and wide view angle
Solution Approach 2:
Different regions of the optical system have different properties: the first lens element has positive refractive power with convex object-side surface, the second lens element has negative refractive power with concave object-side surface, and so on. Each lens element has specific surface curvature and refractive index tailored to its position and function in the sequence
2Adaptability or versatility
If traditional optical systems are used, then the system height is small, but the view angle is limited
Solution Approach 1:
The system achieves wide view angle by precisely controlling parameters of each lens element including refractive power, surface curvature, and thickness. The sixth lens element has specific parameters (refractive power between -0.5 and -2.0, object-side surface curvature between -5.0 and -20.0, image-side surface curvature between -5.0 and -20.0) that optimize the view angle while maintaining compact size
3Manufacturing precision
If more lens elements are added to improve image quality, then the imaging quality improves, but the system becomes more complex and larger
Solution Approach 1:
Each lens element in the six-element sequence performs multiple functions: correcting optical aberrations, controlling focal length, adjusting view angle, and optimizing image quality. The combination of positive and negative refractive power lenses allows the system to achieve multiple objectives simultaneously without requiring even more elements
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration enhances the view angle and image quality, reduces the height and weight of the optical system, and corrects optical and TV distortions, making it suitable for miniaturized portable electronic devices while maintaining high image formation standards.
Implementation Method 1
The optical image capturing system includes a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, and a sixth lens element with refractive powers
Data Source
AI summary
An optical image capturing system, from an object side to an image side, comprises a first, second, third, fourth, fifth, and sixth lens elements. The first lens element with refractive power has a convex object-side surface. The second through fifth lens elements have refractive power and both of an object-side surface and an image-side surface of the four lens elements are aspheric. The sixth lens with negative refractive power has a concave object-side surface. Both of the image-side and object-side surfaces of the six lens elements are aspheric and at least one of the two surfaces has inflection points. Each of the six lens elements may have refractive power. When specific conditions are satisfied, the optical image capturing system can have a better optical path adjusting ability to acquire better imaging quality.